stock silahkan ditanyakan ready kepala biru merk KAMOER selang 2x4mm dan 3x5mm Spesifikasi dari produsen Power supply: DC 12V Working environment: temperature 0-40 degrees, relative humidity :less than 80% Medium flow: the flow of the peristaltic pump connection depends on the power level of positive and negative, positive and negative terminals can be arbitrarily chosen level Flow range :0 to 100 ml / min Speed range :0.1 to100 rpm Motor RPM:5000RPM Drive Size (x H): Diameter 27.6 x height 37.9 (mm) Head size (x H): Diameter 31.7 x height 20.1 (mm) Equipped with pump tube (IDxOD): 2.5 x outer diameter of the inner diameter of 4.7 (mm) (tube can be replaced, but the delivery to be delayed) Weight: 89G Type pump head designed for easy disassembly, easy to clean and maintain. Feature: Silent work Suitable for aquarium, chemicals, liquids, dosing additives It is very easy take apart and clean, so there is gap between motor and pump.just pull out and push in is ok Packahe included : 1 x 12V DC DIY Dosing pump Peristaltic dosing Head Stable and reliable performance Has been widely applied in experiments, biochemical analysis, pharmaceutical, fine chemical, biological engineering, medicine, products, ceramics, water treatment, environmental protection, powders, and other fields Ada juga yang versi besar (pump head 5,5 x5,5 cm) dengan 42 stepper motor, link: https://www.tokopedia.com/kim-yong/dosing-pump-peristaltic-pump-with-42-stepper-motor